fix(core): Fix StreamChannelListController not handling notification.channel_deleted event (v9).#2800

VelikovPetar wants to merge 2 commits into

v9GetStream/stream-chat-flutter:v9from

port/master-to-v9/FLU-564_fix-channel-list-notification-channel-deletedGetStream/stream-chat-flutter:port/master-to-v9/FLU-564_fix-channel-list-notification-channel-deletedCopy head branch name to clipboard